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Cleanup: BufferView should not need to be friend of TextMetrics
It did access par_metrics_[] directly because there was no non-const parMetrics(). This patch adds one and unfriends BufferView. The code is equivalent since in all these cases, the metrics have just been computed with redoParagraph().
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@ -2788,7 +2788,7 @@ bool BufferView::singleParUpdate()
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// (if this paragraph contains insets etc., rebreaking will
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// recursively descend)
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tm.redoParagraph(bottom_pit);
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ParagraphMetrics & pm = tm.par_metrics_[bottom_pit];
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ParagraphMetrics & pm = tm.parMetrics(bottom_pit);
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if (pm.height() != old_dim.height()) {
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// Paragraph height has changed so we cannot proceed to
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// the singlePar optimisation.
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@ -2845,7 +2845,7 @@ void BufferView::updateMetrics(Update::flags & update_flags)
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// Rebreak anchor paragraph.
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tm.redoParagraph(d->anchor_pit_);
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ParagraphMetrics & anchor_pm = tm.par_metrics_[d->anchor_pit_];
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ParagraphMetrics & anchor_pm = tm.parMetrics(d->anchor_pit_);
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// position anchor
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if (d->anchor_pit_ == 0) {
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@ -2872,7 +2872,7 @@ void BufferView::updateMetrics(Update::flags & update_flags)
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pit_type pit1 = d->anchor_pit_ - 1;
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for (; pit1 >= 0 && y1 >= 0; --pit1) {
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tm.redoParagraph(pit1);
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ParagraphMetrics & pm = tm.par_metrics_[pit1];
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ParagraphMetrics & pm = tm.parMetrics(pit1);
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y1 -= pm.descent();
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// Save the paragraph position in the cache.
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pm.setPosition(y1);
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@ -2886,7 +2886,7 @@ void BufferView::updateMetrics(Update::flags & update_flags)
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pit_type pit2 = d->anchor_pit_ + 1;
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for (; pit2 < npit && y2 <= height_; ++pit2) {
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tm.redoParagraph(pit2);
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ParagraphMetrics & pm = tm.par_metrics_[pit2];
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ParagraphMetrics & pm = tm.parMetrics(pit2);
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y2 += pm.ascent();
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// Save the paragraph position in the cache.
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pm.setPosition(y2);
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@ -185,6 +185,12 @@ ParagraphMetrics const & TextMetrics::parMetrics(pit_type pit) const
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}
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ParagraphMetrics & TextMetrics::parMetrics(pit_type pit)
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{
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return parMetrics(pit, true);
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}
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void TextMetrics::newParMetricsDown()
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{
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pair<pit_type, ParagraphMetrics> const & last = *par_metrics_.rbegin();
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@ -60,9 +60,11 @@ public:
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///
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Point const & origin() const { return origin_; }
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///
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ParagraphMetrics const & parMetrics(pit_type) const;
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///
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ParagraphMetrics & parMetrics(pit_type);
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///
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void newParMetricsDown();
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///
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@ -240,7 +242,6 @@ public:
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Dimension & dim) const;
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private:
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friend class BufferView;
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/// The BufferView owner.
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BufferView * bv_;
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